Type-writing machine.



13ul YAW. TYPE WRITING MACHINE. A' PPLITIOE FILED TZG, 1910 1 ,01 5,3731a Patented Jan. 23, 192.

3 SHEETS-"SHEET l.

i IC. B. YAW.

TYPE WRITING MACHINE. AIPLIOATION FILED 00T.26,1910.

Patented .1311.23, 1912.

3 SHEETS-SHEET 2.

iNVENTUR WITNEEEEE:

HEATTURNEY C. B. YAW. TYPE WRITING MACHINE. APPLICATION FILED 00T.26,1910.

Patented 53.11.23, 1912.

3 SHEETS-*SHEET 3.

MTNEEEEE.

l chinos,

ll ig. .-1- `is a .fragmentary View integers.,

py To 'allwhom it may concern.' "Be' it kn'wnthat'l, CLIO B. YAw, citizen qf"`theiUnited States, and resident of Arlmgtlon, irithejcounty of Hudson and State of? Nevlf'fder'sey, have invented certain new E andinsefili-improvements in Type-Writing Machineafo which the following 1s a speeliication.

Myinvention relates to typewriting ma- L andi-it` has for its principal object te 4.provide anjimproved type action for visim, ble f:typeWriters,- and especially for `front strike typewriters.; y

One of the-principal objects of the'invenl5 tien isst'o-reduceA the number of jointed con- Avnections between the key 4levers and type mi barsand alsotbetween the universal bar and the type bars.

lily, invention also contemplates improving .the typeaction in respect to the readi- ,nfess with which it can be assembled.

is. also designed to improve the application of the restoring springs.

Another object of 4the invention is to proy vide improved `means for locking Ithe type ba ls` against' rebound, and another is to imivl p'rve ythe type action in respect to simplieityand general efliciency. y

j` Other objectsA will appear in the courseof the description. v

My invention consists in certain features Mitel? 'construction and combinations and arrangemnts of parts, all or' which will be fully vset forth herein and particularly pointed'out in-the claims.

flnthe drawings, Figure 1 is a front to o; rear vertical sectional View of a typewriting machine'` having my invention embodied therein, only so much of said machine being 40 shown as is needed tol understand the invention.y 'FignQ` is an enlarged fragmentary M side .view lof 'the upper 'end of one the key levers and its connection with the type bar operating link. Fig. Bis a frontelevation inl-vertical section, the section being taken for.,the mostK part onthe line :LL-:u ot Figa-"1. in horizontal section cna larger scale than Figs. 1 andt 'and lshowing the means for regulating the tension of. the.l restoring springs. fFig. 5 is planview,.partly in section, of the key leiter systexmtlus view being more or less "`""diagra1nmatic in character.`

the snakepof illustration, I havehere Aiilpltdved,:type action, mounted in,

AmaitrenA srATEs PA g TYPE-WRITING MACHIN E.

l '1 Specification of Letters Patent.

Applicationled October 26, '1910. Serial No. 539,148.

4the under side of the top plate 3 upstandng @mi y 16,

' rnNfr ermee.

CLIO'BYAW, OF ARLINGTON, NEW JERSEY, ASSIGN OR TO REMINGTON TYPEWRITER COMPANY, OF ILI'ON, NEW YORK, A CORPORATION OF NEW YORK.

Patented Jan. 23, 1912.y

stems ot' the printing keys, as will hereinafter appear. The machine is equipped with a carriage which 'supports a platen 5. The carriage maybe of any vsuitable construction, such, for example, as is well known ferred to.

rIhe machine includes` a series of'front strike type bars G.' each pivoted at 7 in a hanger 8,* and said lhangers are secured by screws il' to the front face of the type bar segment 10. The free ends ot the type bars normally rest on a pad 11 mounted in a segmental support 12 near the front ot' the machine. The type bar segment 10 and the forward segment lfare both secured as 'by' screws to two bars 13, one at either side of the machine, the two segments being connected to the rear and toi-ward ,ends respectively of said bars. In Fig. Si are shown the screws 14; by which the segment 10 is secured to the bars 13. Said bars are fastened to by four screws 15, two for each of said bars. The construction is such that the system of type bars as an entirety can be removed from the machine by removing the screws 15, in which case the two segments 10 and 12, with .the type bars mounted therein, can be taken out of the machine in an assembled relation. bars here shown, together with their mode ot' mounting on the segment 10 and 1also this removable framework in which thel type bars are mounted, areall here .shown as substantially identical with the eorresliionding parts of the llemingtol'rNo.

10 machine, with a single exception thatwill be pointed out hereinafter.

The type bars are operated hva series of key levers, each of which, as here shown and.

considered from the point of ,view lof its physicalogtline, has three armsfnamely, an

in the Remington machine rea I forwardly '5 directed 'f1 arm 17 extending into the Keyboard anda rearwardly directed arm 18 extending back to the pivot of the key lever. Considered mathematically, each of these key levers is simply an angled lever pivot-ed at its rear and lower part to a stationary pivot and having a forwardly directed lever arm that is operated by a key and an upwardly directed lever arm that acts on the type bar. Each of the key levers is pivoted at 20 in a hanger 21 and each of said hangers is, as here shown, secured by two screws 22 to the under side of a stationary frame plate 23. Each of the arms 16 is curved around the forward edge of this frame plate, as shown in' Fig. 1, and extends thence upward and atan inclination toward the rear and all of the said arms have their upper ends extending substantially vertically and in api 20\ proximately` the same transverse vertical plane, This last is partly a matter of mechanical convenience to get the upper ends of the levers in an' arc, and is partly to en able the key levers to coperate properly with a comb plate 24 and a universal bar 25. Said comb plate, as here shown, consists of a strip of sheet metal -secured by screws 26 to the under side of the-segment 12 and having suitableslots cut therein to guide the arms 16. This comb plate is bent into segmental form so that it coperates with the.

- several key levers near their respective up- .near its upper end each one of said lever,

per ends. Said comb plate appears in front elevation `in Fig. 3. The lever arms 1.6 vary in length as indicated in Figs. 1 and 3, each one being of a suitable height to coperate properly with its associated type bar and arms is connected by a link 27 with the heel 'of one of the type bars. y

Each of the forward arms 17 of the-key levers at its forward end projects through a vertical slot in the stem 28 of a printing key 29. The forward end of the lever arm 17 is `formed with -an open slot 30 in which lies..a .pin 31 extending thro-ugh the key stem 28. The keys 29 are arranged in four banks as usual and the lever arms 17 ter- -minate at correspondingpoints. VEach of the key stems is guided near its upper end in a transverse frame -bar 32 and at its lower end in a transverse frame bar 33, there being four pairs of these frame bars, one for each tier of keys. The construction is such that when any key 29. is depressed 'the lever arm 17 is depressed and the upper end ofthe lever arm 16 is moved toward the front 'of the machine and actuates thecorresponding type bar, v y

In order to 'lock the type bars against rebound each of them is formed or provided on` its under side with a small hoolr34-a'11d each of the lever arms 16 is formedat" its upper end with a corresponding hook 35l which normally engages the' hook 34. as

shown in Fig. 1. In order to allow these two hooks to move into and out of engagement, a slight. extent of lost motion is ro- 'vided between the lever arm 16 and Vthe ink 27 as shown in Fig. 2, where it will be seen that the forward end of said link is formed into a hole 37 in the lever arm and that said hole is slightly elongated in a front and back direction. When the key 29 is operated, the first effect of its depression is to take up the lost motion at the point 36, 37, which moves the hook 35 out of the way of the hook 34 before the type bar begins to move; and when the type bar returns to normal position, the lever arm has a Slight additional-motion toward the 'rear which instantly brings the two hooks into engagement. IAs shown in Fig 3, each, of the lever arms 16 near the ends of the segment is bent in radially so as to bring its ,hook 35 into proper relation with the hook ont-he type bar. The described devices furnish a very simple and effect-ive means for locking the type bars against rebound.

The plate 23 may be secured in the machine .in any suitable manner. As here shown, however, it is secured tothe detachable frame comprising the segment' 1() and 12 and the bars 13. To this end two posts 38, one at either side of the machine vnear the front, are secured rigidly to the respective bars 13 and each of said posts is shouldered at its bot-tom and asses through the plate 23 which is secure thereto by a nut 39. A third post 40 is secured to the segment 10 at the middle of the machine and at its bottom has the plate 23' secured to it in the same manner as the posts 38. By this construction the ke i levers and type bars may all beassemble and connected up outside of the -machine and the whole system can be inserted in the machine, the key levers at their forward ends being thrust into the key stems 28.

I Inorder to make the leverage of the several keyson their respective type bars substantially uniform 4throughout the system, the arms 18 vofthe key levers are made of different lengths; that is to say, they terminate at different distances from the front of the machine, as clearly shown in Figs. 1

and 5. pivots 20 are indicated onl b lines.' The location of eac ci' thesegpvots in a front and back direction, is determined by taking account of the length of the forward arm 17, that is to say, which of the four banks of keys that particular Alever leads to, and also by taking account of the various lengths of the arm 16 of the key levers; Each pivot 20 is located so as to tween t e vhorizontal and upright lever arms. For the keys 1n any given tier, the

InV the latter figure Vmost of the heawvfcross'y or provided with a pin 36 which vprojects i\'e that. articualr lever the proper. ratiol pivots near the middle of the machine are also Vcomparatively near the .front of the machine and the pivots near the sides are 4 progressively-farther toward the rear; and 5 the pivots for the forward tier or bank of keys are nearer to the front of the machine than those `of the other banks. It will be perceived that some of jthe pivots are at some distance back of the upper ends of the lever arms 16 and those particular arms move, when operated, in a path that extends toward the front of the machine and somewhat downward; but in no case is this downward inclination suflicient to be of any detriment to the type action. The pivots 20 1 of the vkey levers, are all at substantially the same level, and the points 31 at which said levers are connected with the key stems, are also at approximately the same level as the pivots, so that there is but little sliding of the pins 3l in the slots 30. l

The key levers are returned to normal position by a seriesl of restoringsprngs 4l,

each connected'atits forward end to one of 25l the arms 16 and at its rear end to a hook 42 formed on the rear edge 43 of a sheet metal plate, which plate is secured to a curved cross bar.44. This cross bar is somewhat higher at the sides of the system and curves downward,- having its lowest point at the middle of the system. It will be seen that these springs restore the key levers to normal position and also the type bars, and

they restore the type bars effectively because they are connected therewith, not indirectly through a system of sub-levers but more directly through the links 27. Acting as they do on the lever armsl, these f `springs also hold the hooks in engagementr with the hooks 34.

' Provision is made for simultaneously varying the tension on the' springs 41. To'.

this'end the bar 44 is made adjustable in a front and back direction. Two brackets 45 are secured, one to each of the posts 38, by means of screws or pins 46 and each of said bracketsincludes a tubular portion or barrelthat extends machine and,l has a slot 47 cut in one side thereof.` A long screw 48 extends lengthwise of the tubular portion of each of the bracke'ts45 and is journaled at its forward end in said bracket and at its rear end each l *j-l-of'sa'id screws is formed with a milled head '5549. nut50, threaded on to said screw 48,

br'a'clrets `and has an arm' 51" extending rough 'the slotf47-.-f` Each of the arms 5l slotted atits vinner end and the` end of Gothe bar 44engages-in said slot`where it is f2, secured bya pin 52. In Fig.. 4 I have shown u one of these pins engagingin an open 'slot' 53 in the bar 44. It will beseenthat the bar-44can be adjusted "'in' afrontland back 65 direction by lturm'ng the `milled 'heads49.`

toward the rear of the" iitsinto the bore ofthe tubular'part of the lkey levers are arranged to have different ex- Said bar 44 being jointed or pivotally connected to the nuts, prevents binding in case one of the nuts is for a moment adjusted ahead of the other. If preferred, however, the nuts 50, arms 51 and bar 44 may be made into one rigid structure. The universal bar 25 constitutes part of a pivoted frame, which frame also comprises upright arms 54, to the upper ends of which the unversal bar is secured. Each of said arms at its lower end is pivotedon a pin 55 projecting from the side of a special hanger 5 6 secured to the under side of the plate 23. The two arms 54 are also connected by a cross bar 57 which stiflens the universal ybar frame. iff

Each of the verticalarms 54 has projecting from the lower end thereof toward the front of the machine a horizontal arm 58, the forward end of which lies beneath a pin 59 projecting from the side of a'lev'er arm 60, which at its rear end, is pivoted at 61 in the hanger, 56. The two lever-arms 60 are connected attheir forward ends by a space key or bar 62. Each of the lever arms 60 is held up by a restoring spring 63fconnected at its ends to pins 63a projecting respectively from the lever arm and the hanger 56. The' construction lis such that when the space key 62 is depressed, the pins 59 depress the-arms 58 and operate the universalbar. Said universal bar may begconnected with the escapement and ribbon vibrator, or whatever devices it `is required `to operate, in any suitable manner. Ashcre shown, one or lmore arms 64 project toward the rear of the machine from the `universal bar 25, to which they are rigidly secured. The arm 64 may have a link 65 pivoted thereto and extending to the escapei'nent or ribbon mechanism, or both. In the present instance, `I have shown. two of thesearms 64, lone near the middle of the machine for operating theescapement andthe other more to one side for operating the ribbon vibrator. ,y

It will be perceived that the universalbar and stops are mounted on the same detachable frame that carries the key levers land type bars. It will also be notedy that the universal'bar and the space key are mounted on the same hangers 56 sc that these two parts can be det-ached and attached Simultaneously. y

It will of course be understood that the upper ends of all of the key lever arms 16 will preferably move to the same extent when operated,'or substantially to' the same extent, and therefore the different key levers will turn through diiferent angles.. Asthe' universal bar 25 is a straight bar extending` across the machine, in order that the'same extent of motion may be imparted to said universal bar by alllof the key levers, said A links 27, each-of which is pivoted at one end videdA with lugs similar tents of lostmotion with relation to said universal bar.- In Fig. 1 I have shown one of the middle key levers and also one of the end key levers, and it will be observed :that the midle key lever has a considerable eX- tent of lost mot-ion before it takes up the universal bar. The end key lever is formed with a lug or projection 66, which extends towardthe front of the machine a considerable distance to cause this key lever :to impart a suitable extent of motion to the universalbar. The key levers between the middle and the sides of the system are proditl'ering in height.

It will be observed that Athe key levers are connected with the type bars through the directly to the type bar and at the other end directly to the key lever. This reduces to a minimum the. number of joints to be operated at the depression of a key, andl leaves only two joints between the type'bar and the universal bar, which is important hecause' it enables the universal bar to be moved more exactly in unison with the type .bar than is possible Where thereare a number of joints between them- It is desirable that the escapement be. let off at a definite pointin the stroke of the type bar andthispoint can be regulated with much greater nicety where there is not too long a chain of Y connectionsbetween the type bar anduni- Y versal bar.

Some of the vfeatures of the type action described herein, are 'claimed in my prior application, Serial No. 507,919, filed July 16,

A Various changes can be made without departing from my invention.

What I claim as new and desire to secure by Letters Patent, iszl- 1. In a front-strike typewriting machine,

the combination of a .series of front strike type bars, a horizontally' disposed frame piece beneath said type bars, a series of key leversl pivoted to said frame piece, a series ofkeys having vertically sliding stems, sind key levers each having an upwardly extending arm connected with one of said type bars, a rearwardly extending arm pivoted `to said frame piece, and a forwardly extending arm connected with one of said key stems, and' all of lthe key lever pivots being at substantially the same level.

In a front strike typewriting machine,

the combination of a series of lfront strike 'type bars, -a horizontally disposed frame pieeebeiieath said type bars, a series of key levers p ivoted to the under side kor said framepiece,y aseries of keys having vertically sliding stems, said key levers each having an -upwardly extending arm connected with one ofsaid tytpe bars, a rearwardly extending arm pivotev to said frame piece, and

to the lug 66 but a forwardly extendingl arm connected with one of saidkey stems, and all of the key lever pivots being at substantially the same level, and said upwardly extending arms "arms connected with said key stems, and the pivots of said key levers being substantially at the same level and approximately at the same level as the points of connection between said key levers and key stems.

4. In a front strike typewritingmachine, the combination of a main frame, a series of front strike type bars,,a series of bellcrank key 'levers connected'with said type bars, a type bar segment, a type bar rest, and a support to which said key levers are pivoted, said support, type bar rest and type bar segmentbeing all ,connected so as to constitute parts of one auxiliary frame,.' and said auxiliary frame1 being detachably mounted in said main frame. l 4

5. In a front-strike typewriting machine, the combination of a main frame comprising a top plate, a` system of front strike type bars, a system of angled key levers vand' cox)- nections for operating said type bars, and an auxiliary frame detachably mounted in said main frame, said auxiliary' frame comprising an upper part secured to. said top plate and a lower part connected by posts with said upper part and having said key levers mounted thereon, and said upper part including asegmental support to which said type hai-sare pivoted and a rest for the.\free ends of said type bars.

6. In a front strike typewrit-ing machine, the combination of a series 'o'front strike type bars each having a hook thereon, a series of links pivotcd to the heels of said type bars, and aseries of key operated levers to which said links are connected and each lever having a hook t'or engagement with the hook of the .corresponding type bar.

y7. In a front strike typewriting machine,

the combination of a series ot' front strike.

type bars each having a hook thereon, a Series' of links pivoted to the heels of said type bars and extending therefrom toward the front of the machine, and a series ofkey operated levers each connected to one 0f `said links and having a `hook for engagement wil-h the hook on the corresponding type bar.

f 3. Ina front strike typewriting machine, the Vcombination oi'y a series of front strike type bars each having |a hook, a series of links pivoted to the heels of said type bars 'corresponding type bar at a -from its pivot to prevent rebound.

and extending therefrom toward the front of the machine, a series of key operated levers having upstanding arms to which said links are connected and said arms having also hooks to engage the hooks on the type bars to prevent rebound, and the upper ends of such of said lever arms as are away from l the middle of the system being bent in radially to bring said 'hooks into suitable engagement. v

9. In a front strike typewriting machine, the combination of a series of front strike l type bars, and a series of key levers for 0pl erating said type bars, said key levers and said type bars having interlocking catches to prevent rebound of the type bars and said catches being independent of the type bar operating mechanism.

10. In a front strike typewriting machine, the combination of a series of :front strike type bars, a series of bell crank key levers, and intermediate connections between said levers and said t"y ie` bars for operating said type bars, said key levers having upstanding I arms beneath ,said ytype bars and each of said arms having a device to engage the( point remote l 11. In a front striketypewriting machine. l the combination of a series of front strike type bars each having a hook thereon, a set ries of links pivoted to the heels ot' said type 1i bars and extending therefrom toward the] 'front of the machine,land a series of key operated levers each having lost motion coni nection with one of said. links and having a hook for engagement with the hook on the corresponding' type bar. I

12. In a typewriting machine, the combil l l .l l nation o't a series oA key operated levers, a

` series of restoring springs for said levers, a

i bar to which said springs are secured, two I nuts, which said bar is pivoted, and adjusting screws cooperating with said nuts,lwhereby the tension of said springs can be regulated.

13. In a typewriting machine, the combination of a series of key operated levers, a bar to which said springs are secured, two nuts, one at each end of said bar and to which said bar is pivoted, adjusting screws cooperating with said nuts, slotted stationary barrels for said screws in which barrels said nuts travel and through the lslots in which said nuts extend for connection with said bart whereby the tension of said springs can be regulated.

14. In a front strike typewriting machine, the combination ot' a series of front strike type bars, a series of key operated levers having upstanding arms connected with said type bars, a series ot'k restoring springs connected with said upstanding arms, a cross bar to which springs are connected, and two adjustable pieces, one pivotally connected with each end ot' said cross bar, whereby the tension of said springs can be regulated.

l5. In a typewriting machine, the combination of a type bar, operating mechanism. therefor comprising a key actuated upright lever arm and a connecting .link between said arm and said bar, and interlocking catch devices one on the type bar and the other on the upright lever arm.

Signed at the borough of Manhattan, city' of New' York, in the county of New York, and State of New York, this th day of October, A. D. 1910.

'omo e. YAW.

Witnesses: Y

@Hannes E. SMITH, E. M. VELLs.

one at each end of said bar and toA series of restoring springs for said levers, a 

